Connect to Service Ticket events WebSocket for refreshing list/detail page

[Mark90]

This ticket should be done after #1684.

Context

The Service Tickets UI for CIM is retrieving the entire ticket document -including all emails- every 5 seconds.

This causes unnecessary network/memory/database load; especially for "grote storing" tickets as we experienced in #161.

The proposed solution is for the UI to query only the data that it needs, and only on the first load - or when the data changes.

Proposal for this issue

• Remove 5 second polling on Service Ticket pages
• Add websocket connection to /cim/events (similar to orchestrator's /api/events) to wait for invalidateCache events on specific tickets
• Refresh list page on any ticket update, and detail page only for matching ticket_id

This ticket requires/is blocked by the backend ticket https://git.ia.surfsara.nl/netdev/automation/projects/cim/-/issues/165